Ive heard from a reputable herpetologist, that if you pinch their skin and the folds stay on it for longer than a few seconds... your lizard is dehydrated. Again this was told to me. I would recommend, just to be on the safe side..An hour long soak in a bathtub with the water at room temperature. This might help. Good Luck!
wondering... I never see my ig drink except for once when I put his water bowl under his nose & he drank. He gets a bath almost every day, plus he likes his mistings if that does anything for their hydration?